Modulation of oscillatory neuronal synchronization by selective visual attention.

by: P Fries, JH Reynolds, AE Rorie, R Desimone

Science, Vol. 291, No. 5508. (23 February 2001), pp. 1560-1563.

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Abstract

In crowded visual scenes, attention is needed to select relevant stimuli. To study the underlying mechanisms, we recorded neurons in cortical area V4 while macaque monkeys attended to behaviorally relevant stimuli and ignored distracters. Neurons activated by the attended stimulus showed increased gamma-frequency (35 to 90 hertz) synchronization but reduced low-frequency (<17 hertz) synchronization compared with neurons at nearby V4 sites activated by distracters. Because postsynaptic integration times are short, these localized changes in synchronization may serve to amplify behaviorally relevant signals in the cortex.

@article{citeulike:264464, abstract = {In crowded visual scenes, attention is needed to select relevant stimuli. To study the underlying mechanisms, we recorded neurons in cortical area V4 while macaque monkeys attended to behaviorally relevant stimuli and ignored distracters. Neurons activated by the attended stimulus showed increased gamma-frequency (35 to 90 hertz) synchronization but reduced low-frequency (<17 hertz) synchronization compared with neurons at nearby V4 sites activated by distracters. Because postsynaptic integration times are short, these localized changes in synchronization may serve to amplify behaviorally relevant signals in the cortex.}, address = {Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Building 49, Room 1B80, 9000 Rockville Pike, Bethesda, MD 20892-4415, USA. fries@ln.nimh.nih.gov}, author = {Fries, P. and Reynolds, J. H. and Rorie, A. E. and Desimone, R. }, citeulike-article-id = {264464}, doi = {http://dx.doi.org/10.1126/science.291.5508.1560}, issn = {0036-8075}, journal = {Science}, month = {February}, number = {5508}, pages = {1560--1563}, posted-at = {2007-09-12 18:39:50}, priority = {2}, title = {Modulation of oscillatory neuronal synchronization by selective visual attention.}, url = {http://dx.doi.org/10.1126/science.291.5508.1560}, volume = {291}, year = {2001} }

RIS record

TY - JOUR ID - citeulike:264464 L3 - citeulike-article-id:264464 TI - Modulation of oscillatory neuronal synchronization by selective visual attention. JF - Science VL - 291 IS - 5508 SP - 1560 EP - 1563 AD - Laboratory of Neuropsychology, National Institute of Mental Health, National Institutes of Health, Building 49, Room 1B80, 9000 Rockville Pike, Bethesda, MD 20892-4415, USA. fries@ln.nimh.nih.gov SN - 0036-8075 N2 - In crowded visual scenes, attention is needed to select relevant stimuli. To study the underlying mechanisms, we recorded neurons in cortical area V4 while macaque monkeys attended to behaviorally relevant stimuli and ignored distracters. Neurons activated by the attended stimulus showed increased gamma-frequency (35 to 90 hertz) synchronization but reduced low-frequency (<17 hertz) synchronization compared with neurons at nearby V4 sites activated by distracters. Because postsynaptic integration times are short, these localized changes in synchronization may serve to amplify behaviorally relevant signals in the cortex. AU - Fries, P AU - Reynolds, JH AU - Rorie, AE AU - Desimone, R PY - 2001/02/23/ UR - http://dx.doi.org/10.1126/science.291.5508.1560 ER -

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